These are good in that I feel them working right away (increased energy) and they are a complete and balanced combination of vitamin B. But, I do notice they do give my skin a temporary orange tint (as some B-vitamins will do)... perhaps this is the pure niacin at work. These are good in the morning but if I take in the evening, I have trouble sleeping. If you need more energy due to inadequate diet, these should do the trick. No reason to pay for more expensive vitamins!